Finding the Fourth Proportional to 115,925.20, 173,887.80 and 74,453.20
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Solution
The fourth proportional to 115,925.20, 173,887.80 and 74,453.20 is: 111,679.80
Step by Step Solution
- Step 1: Write the proportion equation
115,925.20 : 173,887.80 = 74,453.20 : x - Step 2: Convert to fraction form
115,925.20/173,887.80 = 74,453.20/x - Step 3: Cross multiply
115,925.20x = 173,887.80 × 74,453.20 - Step 4: Simplify right side
115,925.20x = 12,946,503,150.96 - Step 5: Solve for x
x = 12,946,503,150.96/115,925.20 - Step 6: Final answer
x = 111,679.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.